It is metric not customary because the usa doesnt use it
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Doesn't it? Oh yes it is. Almost all of the rest of world does, I'll have you know!
And so do American engineers and scientists, especially when engaged in international projects.
A "gran" is a German measurement, it is neither customary or metric. A "gram" is a metric unit.
It can be more or less. An once (customary) is bigger than a gram (metric) but a pound (customary) is smaller than a kilogram (metric).
Ounces are an imperial unit. They are a bit confusing as they can be a volume unit or a mass unit. The metric equivalent would be gram or millilitre. About 30 gram = 1 oz About 30 mL = 1 fluid oz
It is a customary unit.
The opposing systems are imperial and metric, not customary. But, meters are metric.
The pound is NOT a metric unit.
No, a gram is not a customary unit of measurement; it is part of the metric system. The customary units of measurement commonly used in the United States include ounces, pounds, and gallons. Grams are primarily used in scientific contexts and in most countries around the world for measuring weight.
Ounces are an imperial unit. They are a bit confusing as they can be a volume unit or a mass unit. The metric equivalent would be gram or millilitre. About 30 gram = 1 oz About 30 mL = 1 fluid oz
It is customary.
Metric.
Metric
Metric.